| 
increased considerably; thousands of homes in 
Seattle, Portland, and smaller cities have installed 
sawdust burners. Many schools, apartments, stores 
and office buildings, also, are heated by sawdust- 
consuming furnaces. 
Hodgson estimated (8) that during 1929 sales of 
sawmill “‘waste”’ fuel wood, hogged fuel, and clean 
sawdust totaled more than $4,300,000 f. o. b. mill. 
Other Wood-Using Industries 
Pulp and Paper Manufacture 
The manufacture of wood pulp is fast becoming 
one of the leading industries in this region. In 
1937, 25 active wood-pulp manufacturing plants 
had a combined capacity of 5,164 tons per 24 hours 
(table 33) of which more than a third was devoted 
to the bleached sulphite process. In the last few 
years production of paper pulp has nearly equalled 
installed capacity. Production in 1935 represented 
approximately 225 days’ operation at full capacity. 
The total output for 1937, shown in figure 30 as 
approximately 1.46 million tons, represents capac- 
ity production for about 285 working days. The 
annual pulpwood consumption of these mills in- 
creased sharply from 1936 to 1937. In 1934-35, as 
shown in table 34, western hemlock was the pre- 
dominant species and nearly 70 percent of the total 
was from sawlogs of this and other species. 
In recent years there has been a significant 
increase in pulp-mill capacity in this region through 
establishment of new plants and expansion of 
existing mills. From June 1936 to July 1937 the 
installed pulp-mill capacity increased more than 
1,000 tons per 24 hours, the increase totaling nearly 
25 percent. Approximately 750 tons of the in- 
crease was in sulphite plants. From present indi- 
cations such considerable increases will continue. 
One pulp mill was under construction in 1937 with 
an expected capacity of 125 tons. 
The 17 paper mills active in 1937 had a total 
24-hour capacity of 2,600 tons, of which 30 per- 
cent was newsprint, nearly 50 percent was fairly 
evenly divided between sulphites and sulphates 
and some 16 percent was in boards (table 35). 
The estimated annual production of paper for 1937, 
as shown in figure 30, amounts to capacity produc- 
tion for 300 working days. 
The region has one plant, not listed in table 35, 
that manufactures wood-fiber insulating board 
from Douglas-fir exclusively, with a daily capacity 
of 250,000 square feet. 
TaBLe 33.—Pulp mills active in Douglas-fir region in 1937 and their capacity,! by survey unit and process of manufacture ? 
Mechanical Deni sul- | Bleached sulphite Sulphate Soda All processes 
Forest-survey unit = 
| 
. Capac- 7 Capac- pa Capac- 7: Capac- : Capac- rs Capac- 
Mills ity Mills ity Mills ity Mills ity Mills ity Mills ity 
Western Washington: Number| Tons | Number| Tons | Number| Tons | Number| Tons | Number| Tons | Number| Tons 
INonthsbugetiSoundees ss a0 oes eee 3 420 i A500 tesce@r ss |4 se ease 1 60 5 930 
Central Puget Sound___________ 2 330 3 137 2 560 2 490) |2es= oo i eis 7 1, 457 
Souchsre use tes OU mG ee ememsteret tn |eke a eam ctll| calen ese sel Ue eS se a awe Anal |e Pies ees | Ee eas | teen eal ee Se ee ee | 
(Gray spbiarborseesaseen as een en |e cas (ee Sy Lee 1 200) ees 2S | OAS ae eee 22 |e ees 1 270 
ColumbiasRivers2s25_2 = 22. 4 240 1 250 3 420 2 310% |Beeeea oe |eenee ee 5 1, 220 
aOR ee ee ee 6 570 | 7 807 7 1, 700 4 740 | 60 | 18 | 3, 877 
Western Oregon: : 
‘ColumbiatRiverses 22-2 -- = 2s 3 670 2 ASS | See | Ce 1 L2G etran sees | Peee 3 980 
WillamettepRivers=oe = Sai eh ee Se 2 117 1 ISOM So 22 es see ee Eee ee ae oe 3 247 
INOTtheOregoniCOas te mesmenree ese | ee oe eae |e ce ek SOs ee ee eee eee |e ere I ee Yi ral eee een eerie Pan eet ee eas Se 
Southk@regontcoast ase aoe ee es 1 GO acre tel | Nea ee ee alee ere SaILNEE See ee ee ce 1 60 
IW OC WADE e Ly Cr eee terse erate | lee head [he Perens 44 Ge Lycra nds) | ENON ES |LGee 2 ea ee ee ce oe |e ey ee a ese ee ee 
UO STIG REVI C 1 semen nearest me caeien | ree w [LC ee oe | een ern [beeen ull ets deere ees Ws eo We hae a |e ee Es ece ee [pee ee 
= | 
Potala ween out 3 670 5 362 1 | 130 10] (ON eae oe eh | apse 287; 
| \— | | | 
Regionitotalass= = use 9 1, 240 12] 1, 169 | 8 | 1,830 5 | 865 1 60 25 | 5, 164 
| | | | 
1 Per 24-hour day. 
224146 °—40——7 
9 
2 
3) 
= A mill using more than | process of manufacture is enumerated under each. 
